4 papers
Cosmological super-resolution of the 21-cm signal
Simon Pochinda, Jiten Dhandha, Anastasia Fialkov +1
In this study, we train score-based diffusion models to super-resolve gigaparsec-scale cosmological simulations of the 21-cm signal. We examine the impact of network and training d…
Uncovering the Effects of Array Mutual Coupling in 21-cm Experiments with the SKA-Low Radio Telescope
Oscar S. D. O'Hara, Quentin Gueuning, Eloy de Lera Acedo +8
We investigate the impact of Mutual Coupling (MC) between antennas on the time-delay power spectrum response of the core of the SKA-Low radio telescope. Using two in-house tools -…
Spectral index of the Galactic foreground emission in the 50-87 MHz range
Marta Spinelli, Gianni Bernardi, Hugh Garsden +4
Total-power radiometry with individual meter-wave antennas is a potentially effective way to study the Cosmic Dawn () through measurement of sky brightness arising from th…
maxsmooth: Rapid Maximally Smooth Function Fitting With Applications in Global 21-cm Cosmology
H. T. J. Bevins, W. J. Handley, A. Fialkov +3
Maximally Smooth Functions (MSFs) are a form of constrained functions in which there are no inflection points or zero crossings in high order derivatives. Consequently, they have a…